Removed redundant casts to `char *`.
Corresponding functions now accept `const char *` (issue #1772673).
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 5ffce2f..6b77868 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -2675,7 +2675,7 @@
     }
     knp = keyname(ch);
 
-    return PyBytes_FromString((knp == NULL) ? "" : (char *)knp);
+    return PyBytes_FromString((knp == NULL) ? "" : knp);
 }
 #endif